Insert storage box for extended cab pickup trucks



FIG. 1 is a perspective view of my design for an insert storage box for extended cab pickup trucks as seen from the back, according to the present invention;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a right end elevational view thereof;

FIG. 4 is a top plan view thereof; and

FIG. 5 is a bottom plan view thereof; and,

FIG. 6 is a front end elevational view thereof. 

The ornamental design for an insert storage box for extended cab pickup trucks, as shown and described. 